Core sample

A core sample is a cylindrical piece of rock or soil taken directly from the Earth using a specialized drill. It reveals the internal composition, structure, and layers of the subsurface at a specific location. Geologists analyze core samples to understand the Earth's history, identify natural resources like oil or minerals, and assess geological stability. This method provides a direct, tangible way to study what lies beneath the surface without extensive excavation. Core sampling is essential in fields like oil exploration, environmental assessment, and scientific research, offering valuable insights into underground formations.